[Surv/Adv] Pancake Survival - For the newest snapshot!

Intro
Pancake survival is a 160x160x8 survival map filled with ores, treasure and mob spawners.
This map requires one of the newest snapshots since it uses command blocks and item frames.
Almost every item is obtainable through chests and custom mob drops (Thanks to Sethbling for the filters).

You start out in a small room with an item exchanging system,
here you can trade any unwanted item for: Grass, sand or wood.